Nhung gi can biet khi su dung chuong trinh HieuCan!
(So khoi ban dau)

Nhap lenh: 	chao 			- hien thi loi chao
				cong 			- thuc hien phep cong 2 so
				tru 			- thuc hien phep tru 2 so
				nhan 			- thuc hien phep nhan 2 so
				chia 			- thuc hien phep chia 2 so
				
				namamlich 	- thuc hien tinh nam Duong lich chuyen thanh nam Am lich
				vehinhtron	- nhan chuot de ve hinh tron
				vehinhelip	- nhan chuot de ve hinh elip
				vehinhchunhat	- nhan chuot de ve hinh chu nhat
				vehinhvuong		- nhan chuot de ve hinh vuong
				veduongthang	- nhan chuot de ve duong thang
				xemngaygio		- xem ngay gio hien hanh
				xemdongho		- xem dong ho
				dockytu			- doc 1 ky tu (a-z, A-Z, 0-9)
											java -jar "HieuCan.jar"  //chay lenh nay moi nghe am thanh
				
				vonglapthuan	- vong lap tang 1 don vi (so truoc nho hon so sau)
				vonglapnghich	- vong lap giam 1 don vi (so truoc lon hon so sau)
				soanvanban		- soan tep van ban va luu
				motep				- mo mot tep tin van ban de xem
				maytinh			- may tinh bo tui
